Note: Since these numbers are national averages, adjust them based on your area of the country.

Salary levels are, approximately 7 percent to 20 percent higher in the Northeast, about average in the South Atlantic (Florida to Delaware), average to modestly lower in the Midwest and South, and 5 percent to 25 percent higher on the West coast.

IT salaries in large metropolitan areas are higher than the national average. For example, in following cities they are:

Salary data courtesy of Robert Half Technology. To request a copy of the complete Robert Half Salary Guide, which includes salary ranges for more than 60 different job titles, in the U.S. and Canada, click here.